Code Division Multiple Access Networks IV [Guest ... - IEEE Xplore

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IEEE JOURNAL ON SELECTED AREAS IN COMMUNICATIONS, VOL. .... Dr. Nakagawa received a second place IEEE Consumer Electronics Society Chester ...
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IEEE JOURNAL ON SELECTED AREAS IN COMMUNICATIONS, VOL. 14, NO. 9, DECEMBER 1996

Guest Editorial Code Division Multiple Access Networks IV

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Admission and Congestion Control: The first paper in this HIS issue completes the set of four issues on CDMA initiated in 1994. While still covering power control section covers adaptive traffic admission for integrated serand cellular and FH systems, networking issues such as vices, while the remaining two papers focus on transmission multimedia, admission and congestion control, and optical control in spread ALOHA satellite systems and congestion networks are also emphasized. The four issues on CDMA, relief on CDMA networks, respectively. though exhaustive, are by no means conclusive. Many classical Cellular Systems: Here, performance of soft handoff, M-ary tasks still need to be actively investigated. We need to find orthogonal modulation and cell site antenna arrays, diversity better solutions for robust code acquisition schemes in high approaches to cellular networks, and a CDMA-based LEO levels of like-user interference, the best hybrid technique (be network are the items of interest. it GSM/CDMA, FH/DS, DSRH, FHRH, or even DS/ATM), Power Control: The effects of imperfect power control and stable open- and closed-loop power control techniques, means user mobility are investigated in the first paper, while adaptive to cancel or reduce like-user interference effects, and the fuzzy power control and power imbalances are covered in the associated computation complexities involved in the above, second and third papers, respectively. to mention but a few. In regard to the last point, numerous FH Systems: An FFH system is introduced in the first useful techniques of multiuser separation and interference can- paper, while multicarrier CDMA systems with adaptive FH ON SELECTED and adaptive packet combining are investigated in the second cellation were included in earlier IEEE JOURNAL AREASIN COMMUNICATIONS issues on CDMA. However, user and third papers, respectively. burstiness and real-time fading-channel measurements have Optical Networks: With the imminent threat of a shrinking degraded the performance of such CDMA receivers. How radio spectrum, optical CDMA transmission on atmospheric much is the degradation? Does it bring us back to the classic as well as fiber channels may provide the required relief. The single-user receiver case? These are some of the questions two papers herein deal with subcarrier multiplexed CDMA that still need to be answered. LAN’s for image transmission and direct detection optical Papers accepted for this issue are classified into the followsynchronous CDMA systems, respectively. ing categories: We conclude this by a word of appreciation to the authors, Multimedia Systems: In this category, we have two papers reviewers, and JSAC editorial and publishing boards. that investigate the performance of multimedia CDMA networks under adaptive transmission control effects and under a joint CDMAPMRA protocol for mixed voice/data transmisAHMEDK. ELHAKEEM, Guest Editor sion. RYUJIKOHNO,Guest Editor Hybrid CDMAIMultiaccess Protocols: Three papers cover PAULW. BAIER,Guest Editor CDMA ALOHA with channel sensing and collision detecMASAONAKAGAWA, Guest Editor tion, reservation random access for voice/data systems, and DONALD L. SCHILLING, Guest Editor multiaccess control for multirate traffic.

A. BUSH,JSAC Board Representative

Publisher Item Identifier S 0733-87 16(96)09386-9.

0733-87 16/96$05.00 0 1996 IEEE

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IEEE JOURNAL ON SELECTED AREAS IN COMMUNICATIONS, VOL. 14, NO. 9, DECEMBER 1996

Ahmed K. Elhakeem (S’75-M’79-SM’86) received the Ph.D. degree from the Southern Methodist University, Dallas, TX, in 1979. He spent the next two years working as a Visiting Professor in Egypt, after which he moved to Ottawa, Canada, in 1982. He assumed teaching and research positions in Carleton and Manitoba Universities and later moved to Concordia University, Montreal, Canada, in 1983, where he is now a Professor in the Electrical and Computer Engineering Department. He has published numerous papers in IEEE and international journals in the areas of spread spectrum and networking. He is a well-known expert in these areas and serves as a consultant to various companies. His current research interests include wideband metropolitan networks, switching architectures and performance of on-board multibeam satellites, acquisitionless CDMA networks, code distribution and orthogonalization of CDMA signals, responsive congestion control for ATM-based networks, ARQ techniques, and investigation of the novel SUGAR CDMA systems in fading channels. He is co-author of the book Fundamentals of Telecommunication Networks (New York: Wiley, 1994). He has chaired numerous technical sessions in IEEE conferences and was the Technical Program Chairman for IEEE Montech ’86 in Montreal, Canada. More recently, he was the Key Guest Editor for four issues of the IEEE JOURNALON SELECTED AREASIN COMMUNICATIONS on Code Division Multiple Access, namely CDMA I, 11, 111, and IV, appearing in May 1994, June 1994, October 1996, and December 1996, respectively.

Ryuji Kohno (S’81-M’84) was born in Kyoto, Japan. He received the B.E. and M.E. degrees in computer engineering from Yokohama National University, in 1979 and 1981, respectively, and the Ph.D. degree in electrical engineering from the University of Tokyo, in 1984. He joined in the Department of Electrical Engineering, Tokyo University in 1984, and became an Associate Professor in 1986. Since 1988, he has been an Associate Professor in the Division of Electrical and Computer Engineering, Yokohama National University. During 1984-1985, he was a Visiting Scientist in the Department of Electrical Engineering, the University of Toronto. At the present, he is the Chairman of the Society of Spread-Spectrum Technology of the IEICE (Institute of Electronics, Information, Communications Engineers), a director of the IEICE Tokyo Section, an Editor for the IEEE TRANSACTIONS ON COMMUNICATIONS, the IEEE TRANSACTIONS ON INFORMATION THEORY,and the IEICE Transactions on Fundamentals. He was the Chairman of the Technical Program Committee of the 1992 IEEE International Symposium on SpreadSpectrum Techniques and Applications (ISSSTA’92), and has been chairing and organizing several international conferences and workshops. His current research interests lie in the areas of adaptive signal processing, coding theory, spread spectrum systems, and their applications to various kinds of practical communication and ranging systems. Dr. Kohno is a member of EURASIP, IEICE, IEEJ, IPSJ, and SITA.

Paul W. Baier (M782-SM’87-F’95) was born on June 10, 1938, in Backnang, Germany. He received the Dip1.-Ing. degree in 1963, the Dr.-Ing. degree in 1965, and the Dr.-Ing. degree habil. (Dr. Sc.) in 1969, all from the Technical University of Munich, Germany. At the Technical University of Munich, Germany, he was a Research Assistant from 1963 to 1965 and a Senior Lecturer from 1965 to 1969. In 1970, he joined the Central Communications Laboratories of Siemens, Munich, Germany, where he was responsible for various topics of communications engineering. Since 1973, he has been Professor of Electrical Communications and Director of the Institute for RF Communications and Fundamentals of Electronic Engineering at the University of Kaiserslautern, Germany. His main research interests are spread-spectrum techniques and mobile radio systems. Dr. Baier is a member of the Verband Deutscher Elektrotechniker (VDE), Informationstechnische Gesellschaft (ITG im VDE), Gesellschaft fur Mikroelektronik (GME im VDE), and Commission C (Signals and Systems) of U.R.S.I. Member Committee Germany. Offered appointments: 1973 Chair of RF Techniques, Universitat der Bundeswehr Hamburg, Germany: 1976 Director of Institut fur Hochfrequenztechnik of the German Aerospace Research Establishment; 1988 Chair of Fundamentals of Electronic Engineering, University of Ulm, Germany.

IEEE JOURNAL ON SELECTED AREAS IN COMMUNICATIONS, VOL. 14, NO. 9, DECEMBER 1996

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Masao Nakagawa (M’81) was born in Tokyo, Japan, on November 19,1946. He received the B.E., M.E., and Ph.D. degrees from Keio University, Yokohama, Japan, all in electrical engineering, in 1969, 1971, and 1974 respectively. Since 1973, he has been with the Department of Electrical Engineering, Keio University, Hiyoshi, Kohoku-ku, Yokohama, Japan, where he is now a Professor. His research interests are in spread spectrum communications, consumer communication, mobile communication, and optical communications. He was the Executive Committee Chairman of the International Symposium on Spread Spectrum Techniques and Applications held in Yokohama in 1992. He is the Chairman of the Spread Spectrum Study Group of the Institute of Electronics Information and Communication Engineers. Dr. Nakagawa received a second place IEEE Consumer Electronics Society Chester Sal1 Award in 1990.

Donald L. Schilling (S’56-M’58-SM’69-F’75) is currently Chairman of the Board of Directors of Golden Bridge Technology, Inc. He was formerly Vice Chairman of the Board, Chief Executive Officer, and President of InterDigital Communications Corporation, where he invented and led the development of broadband-CDMA, and began the field of PCS in the United States. WidebandCDMA, the generic form of B-CDMA, is being standardized for PCS by TIA and the ITU. He is Professor Emeritus of Electrical Engineering at the City College of New York. He retired in May 1992 as the Herbert G. Kayser Distinguished Professor of Electrical Engineering at the City College of the City University of New York. Prior to moving to CCNY, he was a Professor at the Polytechnic Institute of New York. He is an internationally known expert in the field of communications systems. He has made notable contributions in spread spectrum communications systems, FM and phase-locked systems, meteor burst communications systems, and HF systems. His design of an adaptive delta modulator is used on the Space Shuttle. He has co-authored 12 textbooks, more than 200 papers, and has 30 patents, granted and pending, in telecommunications and electronics. Dr. Schilling was President of the IEEE Communications Society from 1980 to 1981, and a member of the Board of Directors of the IEEE from 1982 to 1983. He was Editor of the IEEE TRANSACTIONS ON COMMUNICATIONS, Director of Publications from 1968 to 1978, and initiated the COMSOC Magazine and IEEE JOURNAL ON SELECTED AREASIN COMMUNICATIONS. During his term as President, he also initiated the MILCOM and INFOCOM conferences. He is a member of Sigma Xi.

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